Carbureter.



Patemdept. 4,191?.

3 SHEETSMSHEET l.

J. TUMALTY.

CARBURETER.

APPLlcATxoN HLEn1uNE25. 1915.

1. W. TUIVIALTY.

CARBURETER.

APPLICATION FILED JUNE Z5. 1915.

Patented Sept. 4, 191?.

I. W. TUMALTY.

CARBURETER.

APPLICATION FILED JUNE 25.1915.

Patented. Sept. 4, 191?.

3 SHEETS-SHEET 3 JOHN' W. TUMALTY, 0F CHICAGO, ILLINOIS.

GARBURETER.

Specification of Letters Patent.

Patented sept. a, iai a Application led June 25, 1915. Serial No. 36,289.

To all whom z't may concern:

Be it known that I, JOHN W. TUMALTY, a citizen of the. United States, and residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful `Improvement in Carbureters, of which the following is a specification.

This invention relates to carbureters.

The invention has for its objects to produce a compact device of this character susceptible of ready and eiicient operation in the production of a mixture suitable for heating or lighting purposes, or a mixture for supplying explosive engines; one in which the air or gas and the liquid hydrocarbon will be thoroughly cleansed of impurities, before finally passingoff in the form of hydrocarbon gas mixture; and one wherein a thorough and rapid vaporization of the hydrocarbonliquid and an adequate mixing of the resultant vapor, with the air or gas to be impregnated, is insured.

Further objects of the invention are to control, at will, the volume of air or gas entering into the mixture, thus adaptingl the latter for varied uses; to automatically confine shocks, resulting from back-pressure, within a restricted area; and to eifect ltration of the incoming air or gas and also of the mixture before passing off for use.

With these and other objects in view, the invention comprises the novel features of construction and combination of parts more fully herein after described;

In the acompanying drawings.

Figure 1 is a top plan view of the carbureter with the cover removed and parts broken away to expose underlying parts;

Fig. 2 is a horizontal longitudinal section on line 2-2 of Fig. 3 parts being shown in plan;

Fig. 3 is a vertical longitudinal section on the line 3--3 of Fig. 1, parts being in elevation;

Fig. 4 is a vertical transverse section on the line 4 4 of Fig. 1;

Fig'. 5 is a perspective view of one of the packing elements;

Fig. 6 is a front elevation of the device;

Fig. 7 is a detail section of the main air inlet on the line 7-7 of Fig. 1;

Fig. 8 is a detail section of the float chamber on the line 8-8 of Fig. 6;

, insetting the Fig. 10 is a detail section of the auxiliary air inlet, taken on line 10-10 of Fig. 9.

Referring to the drawings it will be seen that the device embodies a sheet metal receptacle or casing l, having a removable cover 2, provided with a depending marginal iange 3, designed to seat in a recess 4, formed at the upper edge of the rece tacle by means of 'a suitably iianged or og'- set strip 5, attached to the inner face of the receptacle, whereby the latter is hermetically closed by the cover.

Mounted in the receptacle 1, and arranged in vertically spaced relation is a pair of horizontal porous screens 6, each consisting of an inner sheet or core of wire fabric incased in an outer covering of cloth,

these screens constituting imperforate, perlmeable partitions subdividing the receptaole into a lower mixing or carbureting chamber 7 an intermediate space 8, and an upper auxiliary chamber 9, there being disposed in the space 8, an imperforate sheet metal gas container or dome 10, having a perforated bottom wall 11, Hanged at its outer edge, as at 12, around the lower edges of the marginal wall of the container, as seenl in Fig. 3. Provided between the bottom 11, and underlying partition 6, is a space 13, the purpose of which will hereinafter appear, this space being formed by bottom 11, slightly into the body of the container and being inclosed relative to space 8, by the marginal ange 12, resting on the partition.

Housed within the carbureting chamber 7, is a feed or float chamber or compartment 14, preferably located at one corner of said chamber and formed as seen in Figs. 2 and 8 by a metal partitionl, attached to the adjacent walls of the receptacle,` there being formed in the lower edge of the partition suitable openings or ports 16, of communication between the compartment and chamber 7, while formed in one outer wall of the compartment is a circular entrance opening 17, in which is i'itted an internally threaded bearing ring or annulus 18, attached to said wall, and designed to receive a closure disk or cap 19 provided, on its inner face, with an annular fiange 20, ex-' ternally threaded for engagement with the bearing ring 18, to secure the closure re-l lthe compartment 14, in a vertically disposed hollow casing 22, in turn provided at its upper end with an opening normally closed by a valve 23, on the vertical stem 24 of which is attached a float 25 for controlling the level of the gasolene or other hydrocarbon fuel admitted to the chamber 7. The pipe 21, which may be closed by a suitable cut-off valve 26, is made in two sections connected by a union 27, at the outer face of the closure 19, to which latter the inner section of said pipe, in turn carrying the float valve, is fixed; whereby the said valve, as a whole, may be removed from the compartment at will by unscrewing and removing the closure 19.

Disposed at the longitudinal center and near the rear wall of the receptacle 1, is a vertical stand pipe 28, attached at its lower end to the bottom of the receptacle by nuts 29, and provided at its upper end with a removable closure cap 30, while connected to the stand pipe and for communication therewith is a pair of oppositely projecting hori- Zontal branch pipes 31, in turn carrying, at their outer ends, forwardly projecting portions or sections 32, each having perforations 33, distributed at intervals over its entire ysurface area. Each of the perforated sections 32, is housed in a protecting screen 34, consistin of a sheet of wire gauze, or other reticu ated material applied over the upper surface of the pipe, and led thence vertically downward to the bottom of the receptacle, to which the lower edge of the screening sheet is suitably attached, it being noted on reference to Fig. 3, that the vertical portions of each screen are spaced relatively a distance equaling the diameter of the pipe, thus affording a free space for discharge of the incoming air, as more fully hereinafter explained, and further that the branch pipes 31-32 are situated in the mixing or Carbureting chamber 7, with their lower faces at the normal liquid level therein and their upper faces immediately below the lowermost partition 6.

Situated suitably adjacent to the receptacle 1, is an air heating drum 35, provided in its lower face and near its rear end with a screened air inlet 36, and in its upper face near its forward end with an air outlet in the form of a pipe 37, leading to and connected with the lower end of stand pipe 28, as seen in Fig. 7, by means of a vertical pipe section or nozzle 38, housed within the stand pipe and normally closed at its up er end by a gravity seated valve, such as a lall 39, it

mamar being noted that the pipe 28 is of greater' diameter than the inclosed pipe 38, thus forming a surrounding air passage 40, which communicates freely with the branch pipes 31, and terminates at a point below the latter in downwardly and outwardly inclined openings or ports 41, disposed below the level of the liquid fuel in the container. The parts 28, 31 and 32, which take air from the drum 35, through pipe 37 f -38 constitute the main air supply for supplying air to the carbureting chamber 7, and this air, before entering said chamber, is heated in the drum 35 by means of a pipe 42 leading from the engine exhaust and extending through the drum. Entering the front wall 4of the receptacle 1, near its top, is an auxiliary air inlet 43, in the form of an elbowed pipe having its outer open end provided with a screen 44 andits inner end joining a valve casing 45, containing a suitable cut-oli' valve whose stem projects outwardly through the wall of the casing and is equipped with a hand wheel 46, there being coupled to the inner end of valve casing 45, as seen more clearly in Figs. 9 and 10, a vertically disposed elbow 47 having an internal valve chamber 48 containing a gravity closing valve, preferably in the form of a ball 49.

Connected with elbow 47, the upper end of which is normally closed by a removable closure disk 50 and communicating with chamber 48, is a pipe section 51, in turn connected with branch pipes 52 having perforations 53 distributed at intervals over their surfaces, these pipes, which together with the inlet 43 and connections described, are disposed within the chamber or compartment 9, being arranged for distributing the auxiliarysupply of air freely throughout said compartment and over the surface of the uppermost partition 6.

Connected at its lower end to the bottom of receptacle 1, by a nut 54, is a vertical outlet pipe 55 terminating at its upper end within chamber 8, between the partitions 6, in a valve casing 56 connected for communication with the interior of the gas dome 10, by means of a thimble 57 opening through the front Wall of the latter. The lower end of the pipe 55 is threaded, beyond the nut 54, for engagement with a suitable duct which carries the mixture to the source of consumption, while arranged in the casing 56, is a suitable controlling valve having its stem 58 projected beyond the front wall of the receptacle and equipped with a hand wheel 59.

The carbureter chamber 7, and the chamber 8, outside of the as dome v10 are com pletely packed with asorbing elements 60, those in the carbureting chamber being arranged vertically, while those in the chamber 8 are horizontally disposed. These elements, which are alike in construction, each consists, as shown in Fig. 5, of an outer covering 61, of cloth, and an inner filling 62, of

excelsior or other absorbent wood fiber.

Leading into the receptacle 1, through the `bottom thereof and for communication with carbureting chamber 7, is an auxiliary fuel supply 63, adapted4 to be controlled by a suitable cut-o valve 64 while communicating with said chamber through the front of the .receptacle is a pet cock 65, positioned at the normal liquid level within the chamberA and in the same vertical plane as the float 25.

The operation of the device is as follows:

A supply of gasolene or other hydrocarbon liquid is, by opening valve 26, permitted to flow through pipe 21 into lcompartment 14 and thence, through openings 16, to the carlbureting chamber 7, the fio-vv of liquid continuing until it has reached the maximum level in the chamber as determined by the float 25, which, when the desired level is reached, closes the valve 23 as usual, it being understood of course,sthat this level will be automatically maintained by means of the float as long as the valve 26 remains open. rlhe liquid fuelentering the chamber 7 is taken u by the absorbent elements 60 and given o by them in the form of vapor which will freely commingle with the iiuid, such as air or gas, entering through the main air supply 38-28, and distributed through the chamber 7 by means'of the perforated .sec-

. tions 32 of branch pipes 31. The air and gas, after mixing in the carbureting chamber 7, pass upward through the lower pery meable partition 6 into the gas dome or com-v partment 10, it being understood that during passage of the mixture throu h the partition surplus ungasified hydrocar on will be absorbed by the partition, and further, that the mixture after passing through the partitionv will pass freely through the perforated bottom 11 of, and into, the dome.

The air supplied, as just described, to the chamber 7, first passes through the drum 35, to which it is admitted through screened inlet 36, and after circulating through'the drum around the vheating pipe 42, passes off through pipe 37, being finally discharged from pipe 38 into stand pipe 28, for entrance by way of the passage 40,. into the distribution pipes 31. The air entering the drum 35 Will be freed from dust or like impurities by the action of screen 36, but should any dust remain and be carried by the air into the passage 40, it will be precipitated through the dust ports 41 into the liquid contents of the chamber, it being understood that this precipitation of the dust will result from the natural inertia of the latter resulting from the change in theA course of the air in its passage to the pipes 31. It will be seen therefore that the air upon entering the chamber 7, for mixing with the hydrocarbon vapor, is cleansed of dust and like impurities but will, before reaching the vapor, undergo a further screening through the medium` of the fabric 34. The mixture taken into the dome l0 will be dischargedv therefrom through the outlet '55 and pass oif to the point where it is to be consumed. -If the mixture is to be used for supplying an explosive vengine it may be further supplied or diluted with air admitted through the auxiliary supply 43 and distributed, by means of the perforated pipes 52, in the auxiliary air chamber 9, it

being noted that the air entering this chamshock of'such back vpressure wholly within the casingl. -Should the ioat valve mechanism become disordered, necessitating repairs, valve 26 may be closed and the sections of pipe 21 disconnected by proper manipulation of union 27, whereupon the closure 19 may be unscrewed and the float valve, as a whole, removed from the compartment 14. In the event of this'contingency arising the operation of the de- 4vice may be continued by opening valves26 and 65, thus permitting a supply of fuel to flow into the chamber 7 through the aux iliary supply,-it being understood that when the proper level has been reached this fact will be indicated by a discharge from the pet cock which, together with the valve 64, can then be closed. Extending through the receptacle, at a point beneath the level of pipes 32, is a heating pipe 66 which may be connected with the exhaust, or other source of supply, and which will serve to heat the liquid hydrocarbon to facilitate vaporizing the same. From the foregoing it is apparent that there is produced an exceedingly compact device in which a thorough and rapid mixing of the air and hydrocarbon vapor will be effected, and which insures the resultant mixture being free from impurities, owing to the cleansing of the incoming air in the manner explained, and the cleansing of the hydrocarbon liquids .during the process of absorption and evaporation thereof by the elements 60. Furthermore it is evident that the device provides for the production of a heavily charged mixture suitable'for use for heating or lighting purposes, and also, and with equal facility, alight diluted mixture adaptable for use with explosive engines, this iso i lighter mixture being obtainable by the air supplied to the chamber 9 for final dilution of the mixture within the dome 10.

It is obvious that various changes may be made in the details of construction without departing from the spirit of this invention. It is, therefore, to be understood that this invention is not to be limited to the specific construction shown and described.

I claim:

l. A carbureter comprising a carbureting chamber, means for supplying hydrocarbon and air thereinto, an imperforate permeable partition constructed and arranged to form the upper wall of said chamber and to permit the mixture from said chamber to seep therethrough, a gas collecting dome above said partition, said dome having an outlet and being eonstruetedand arranged tocollect and confine the mixture passing off from said chamber through said partition,I a second imperforate, permeable partition above said dome, and auxiliary means for supplying air alone above said second partition for seepage therethrough to said gas dome.

2. A carbureter having a pair of spaced imperforate, permeable partitions disposed horizontally and provided with an outlet between said partitions, means for supplying hydrocarbon and air to one space outside of the partitions, means for supplying air alone to the other space outside of the partitions and means for drawing ofi' the mixture from said partitions through said outlet.

3. A carbureter having a pair of spaced imperforate permeable partitions disposed horizontally and subdividing the same into three chambers, means for supplying hydrocarbon fuel and air to one of said chambers,

a gas dome arranged in the chamber between l said partitions, an auxiliary air distributing pipe arranged in the third chamber and having perforated sections extended within said chamber and means for drawing off the mixture from said dome.

4. A carbureter having a carbureting chamber, a pair of spaced imperforate permeable partitions disposed horizontally above said chamber, a gas 'dome between said partitions and provided with a perforated bottom of less area than said partitions and spaced from the underlying partition, said dome being provided with an outlet, an auxiliary fluid pipe arranged above the upper partition'and having perforated distributing sections extending thereover, and means for supplying hydrocarbon fuel and a fluid to the carbureting chamber.

5. A carbureter chamber, a pair of spaced imperforate permeable partitions disposed horizontally above said chamber, a gas dome between said partitions and provided with a perforated bottom of less area than said partitions and spaced from the underlying partition, a depending flange around the perforated bottom of the gas dome and reaching down lto the underlying nicating with said dome, an auxiliary fluid pipe arranged above the upper partition, and means for supplying hydrocarbon fuel and a fluid to the carbureting chamber.

6. A carbureter having a carbureting chamber, and imperforate permeable partition above said chamber, means for supplying hydrocarbon fuel and a fluid to the chamber beneath the said partition, a gas dome of less horizontal area than said partition and arranged above said partition, and absorbent elements packed in the carbureting chamber and around the gas dome.

7. A carbureter having a pair of imperforate permeable partitions disposed in spaced relation and forming a carbureting chamber and a mixture receiving chamber, a gas dome arranged in the latter chamber between the partitions, said gas dome being of less horizontal area than said partitions, means for supplying hydrocarbonifuel and a fluid to the carbureting chamber, and absorbent elements packed in the carbureting chamber and in 'the mixture receiving chamber around the gas dome.

In testimony whereof I affix my signature this 24th day of May, 1915, Y

JOHN W. TUMALTY.

having a carbureting partition, an outlet commu- 

